> Doe that make sense ? Doing the same test by disabling SMP on the host,
> and
> results are much faster.
> NOTE SMP is turned off for the UML.

This is a shot from the hip, but

UML uses multiple processes for it's buisness. When host is SMP, these can
be mapped to different cpu's, and when interprocess stuff is to occure,
cpu's have to sync.

Also, some few kernel things is slower on SMP, while user-space things
that are not related, and multithreaded apps run faster.

Stian


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